A 2nd-year high school idol. She is at her worst right now as puberty, a growth spurt, and her menstrual cycle have all hit at once. With a packed schedule on top of that, she has become a full-blown moody adolescent girl.

A 1st-year high schooler dating Akane. He is extremely flustered to find out Kana is going through puberty. He is a handsome, cold-hearted guy.

A 25-year-old YouTuber and idol. She is a kind older sister figure who worries about Kana's puberty.

A 2nd-year high school actress. She used to admire Kana, but now they greet each other as rivals. She is dating Aqua and is looking for an opportunity to pull ahead while Kana is struggling with puberty.

A 1st-year high school girl who is worried about how long Kana's puberty will last. Super cute.